基于INVEST模型的资水流域产水量及其对环境响应的评估分析  

Evaluation and analysis of water production in Zishui basin and its response to changing environment based on INVEST model

作　　者：周懿琳 毛德华[1] ZHOU Yi-lin;MAO De-hua(College of Geographical Sciences,Hunan Normal University,Changsha 410081,China)

机构地区：[1]湖南师范大学地理科学学院,长沙410081

出　　处：《湖北农业科学》2022年第9期16-23,共8页Hubei Agricultural Sciences

基　　金：国家自然科学基金区域创新发展联合基金项目(U19A2051);国家一流学科培育项目(5010002)。

摘　　要：资水流域属于亚热带湿润地区,植被覆盖度高,降水丰富,径流量大。通过对资水流域产水量定量化评估,有利于合理规划流域水资源,促进流域经济发展。基于INVEST模型的产水量模块(Water yield),研究了2005年、2010年、2015年资水流域的产水量情况,并根据背景分析法,模拟了降水量和土地利用变化情况下对产水量的影响。结果表明,2005—2015年,产水总量先降低后升高,但变化幅度不大,2005年、2010年和2015年平均产水量分别为1153.39、973.81、1102.37 mm,产水总体积分别为332.17×10^(8)、280.45×10^(8)、317.48×10^(8)m^(3);产水量的空间格局为北高南低,从娄底市以北到益阳市产水量较高,娄底市以南到邵阳市产水量相对较低。通过背景分析发现,2005—2010年、2005—2015年、2010—2015年,土地利用变化对产水量的贡献分别为为8.57%、38.80%、10.06%,降水量变化对产水量的贡献分别为91.43%、61.20%、89.94%,降水量对产水量的影响较大,土地利用对产水量的影响较小。Zishui watershed is a subtropical humid area with high vegetation coverage,abundant precipitation and large runoff.The quantitative assessment of water production in the basin is beneficial to rationally planning the water resources and promoting the eco⁃nomic development of the basin.Based on the water yield module of INVEST model,this paper studied the water yield of the resource water basin in 2005,2010 and 2015,and simulated the effects of precipitation and land use change on the water yield according to the background analysis.The results showed that from 2005 to 2015,the total water yield first decreased and then increased,but the value changed little.The average water yield in 2005,2010 and 2015 was 1153.39 mm,973.81 mm and 1102.37 mm,respectively,and the total water yield was 332.17×10^(8)m^(3),280.45×10^(8)m^(3)and 317.48×10^(8)m^(3).The spatial pattern of water production was higher in the north and lower in the south.From Loudi city to Yiyang city,the water production was higher,while from Loudi city to Shaoyang city,the water production was relatively lower.Through background analysis,it was found that the contributions of land use change to water production from 2005 to 2010,2005 to 2015 and 2010 to 2015 were 8.57%,38.80%and 10.06%,respectively,and the contributions of precipitation change to water production were 91.43%,61.20%and 89.94%respectively.Precipiture had a greater impact on water production,while land use had a smaller impact on water production.

关 键 词：产水量 INVEST模型 降水变化 土地利用变化 资水流域 

分 类 号：P964[天文地球—自然地理学] P426